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Re: RFC: SysRq nice-all-RT-tasks is broken

From Steven Rostedt <rostedt@goodmis.org>
Newsgroups linux.kernel
Subject Re: RFC: SysRq nice-all-RT-tasks is broken
Date 2017-03-08 18:00 +0100
Message-ID <tiN6q-Q0-17@gated-at.bofh.it> (permalink)
References <tiLHk-8qM-21@gated-at.bofh.it> <tiN6p-Q0-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 8 Mar 2017 11:51:14 -0500
Steven Rostedt <rostedt@goodmis.org> wrote:


> Hmm, that commit was added in 2.6.18, and you're right, a lot has
> changed since then. Have you tried removing it and running it under
> lockdep, and see if it triggers any warnings?

I did a little digging, and it appears that its the rt mutex wait lock
that the comment was referring to. Today that spin lock is irq safe. I
believe its safe to remove the BUG_ON(). Want me to send a patch?

-- Steve

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Thread

RFC: SysRq nice-all-RT-tasks is broken Laurent Dufour <ldufour@linux.vnet.ibm.com> - 2017-03-08 16:30 +0100
  Re: RFC: SysRq nice-all-RT-tasks is broken Steven Rostedt <rostedt@goodmis.org> - 2017-03-08 18:00 +0100
    Re: RFC: SysRq nice-all-RT-tasks is broken Steven Rostedt <rostedt@goodmis.org> - 2017-03-08 18:00 +0100
      Re: RFC: SysRq nice-all-RT-tasks is broken Steven Rostedt <rostedt@goodmis.org> - 2017-03-08 18:50 +0100
        Re: RFC: SysRq nice-all-RT-tasks is broken Steven Rostedt <rostedt@goodmis.org> - 2017-03-08 19:00 +0100
          Re: RFC: SysRq nice-all-RT-tasks is broken Laurent Dufour <ldufour@linux.vnet.ibm.com> - 2017-03-09 12:30 +0100
      Re: RFC: SysRq nice-all-RT-tasks is broken Laurent Dufour <ldufour@linux.vnet.ibm.com> - 2017-03-08 22:10 +0100

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